Ments



N0 Model.)

2 Sheets-Sheet 1.

M G. BUNNELL- MACHINE FOR MAKING AND REPAIRING ROADS."

Patented July '7, 1891.

W We/wf/i (No Mqdel.) 2 Sheets-S11eet 2.

. M. G. BUNNELL.

MACHINE FOR MAKING AND REPAIRING ,ROADS.

No. 456,706. Patented July 7,1891.

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MORTON G. BUNNELL, OF CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO ANNA B. AUSTIN, OF SAME PLACE.

MACHINE FOR MAKING AND REPAlRING ROADS.

SPECIFICATION forming part of Letters Patent N 0. 455,705, dated July 7, 1891.

Application filed October 27, 1890. Serial No. 369,465; (No model.)

To all whom it may concern.-

Be it known that I, MORTON G. BUNNELL, a citizen of the United States, residing at Ohicago, in the county of Cook and State of Illinois, have invented a Improvement in Machines for Making and Repairing Roads, of which the following is a specification.

My invent-ion relates to a construction of to road-making androad-repairing machineinvolving a body-frame supported upon horizontally-swinging front and rear axles and a diagonally-adj ustable scraper-blade arranged so that it can be adjusted to various horir5 zontal angles relatively to the line of progression of the machine.

The object of my invention is to provide novel and improved means for swinging the rear axle horizontally, so as to effect certain changes in the position of the rear wheels relatively to the front wheels and to the position and horizontal angular adjustment of the diagonally-adjustable scraper-blade, to effect a' change in position of the scraper-blade, and to overcome such'side draft as may result from the oblique position of'said blade.

To the attainment of the foregoing and' other useful ends my invention consists in matters hereinafter set forth, and particularly 3 pointed out in the claims.

In the accompanying drawings, Figure l is a top plan view of a road-working machine embodying my invention. Fig. 2 is a top plan view of the rear portion of the machine on a somewhat larger scale than the preceding figure, portions of the rear axle being broken away for convenience of illustration. Fig. 3 is a section on line 3 3 in Fig. 2, the hand-wheel shaft being, however, shown in 40 elevation andbroken away for a portion of its length for convenience of illustration.

In said drawings, A indicates the bodyframe, which is pivotally supported at itsforward end upon the short swinging front axle 1, which said axle is provided with wheels 2 in the ordinary way. \Vhile the forward end of the body-frame may be pivotally supported upon the front axle in various ways, I prefer to employ a turn-table or large fifth-wheel B asa pivotal connection between said bodycertain new and useful frame-and front axle. A diagonally-adjustable scraper-blade O is arranged below the body-frame and is suspended therefrom by suitable raising and lowering devices, which, however, permit the blade to be swung bodily toward one and the other side of the machine. The blade is drawn by the horizontally and vertically swinging draft-bar D, with which'the blade is pivotally connected, so that the ends of the blade may be alter- 6o nately placed ahead and also so that the blade, which is arranged to extend across the space between the front and rear wheels, can be swung horizontally about its pivotal center in order to vary its horizontal angle relatively to theline of progression. While I may employvarious means for raisingand lowering the blade and for adjusting it about its pivotalconnection with the swinging draft-bar,

I have in Fig. 1 indicated as a means for at- 7o taining said ends and for swinging the draftbar certain devices, more fully illustrated in my application, Serial No. 370,236, filed November 3, 1890.

The long rear axle E, which supports the rear end of the body-frame, is arranged to swing horizontally about a point midway of its ends and is adjustable in its said movement independently of the body-frame. The end portions of the rear axle extend beyond the sides of the body-frame, so as to set the wheels out from the same to an extent to permit the desired extent of swinging adjustment on the part of the axle. The end poi tions of the rear axle also extend through 8 5 guide-bearings F, which are secured to the axle and provided with horizontal guideways 3, proportional in length to the greatest desired extentof swing on the part of the end portions of the axle which pass through said 0 guideways. These guideways steady the axle and prevent the body -frame from tipping sidewise independently of the axle. The end portions of the horizontally-swinging rear axle are connected with the bod y-frame by toggles G, which are normally bent, as in Figs. land 2, when the rear axle is at right angles to the length of the body-frame. By this arrangement one of the toggles will tend .to

straighten out, while the other will tend to I00 further close or contract when the axle is swung about a point midway of its ends. As a preferred arrangement, I connect the toggles by a rod or bar h, so that the toggles shall operate synchronously or simultaneously, and in this way a pull or push upon the middle joint of either toggle in a direc tion transverse tothe length of the bodyframe will cause both toggles to operate simultaneously.

During the aforesaid operation of the toggles the one which has a closing action will serve to draw one end of the axle forward, and simultaneously therewith the toggle which is straightening out will serve to force the remaining end of the axle rearwardly. It will be obvious that I could provide independent devices for-operating the toggles and place such devices under the control of an attendant standing upon the rear platform I of the machine, or that I could provide in connection with the toggles a device arranged to apply power direct to the axle as a means for swinging it; but as a simpler and preferred way I employ a single device for operating both toggles. The device herein provided for thus operating the toggles comprises a hand-wheel shaft K, arranged within convenient reach of an attendant standing upon the rear platform and connected with the toggles by a chain or like flexible connection -stich as a cord or cable--in such Way'that by turning the hand-wheel shaft a pull can be exerted upon one or .the other of the-toggles, according to the direction in which the hand-wheel shaft is turned.

The hand-Wheel shaft is mounted uponthe body-frame and may be provided with a sprocket arranged to engage a chain having;

its ends respectively connected with one and the other of the toggles at their middle joints; but as a preferred arrangement I providethe hand wheel shaft with a spirallygrooved winding-drum or enlarged shaft portion 4'and: divide the chain L into two sect-ions orlengths 5 having their outer ends attached to the toggles and their inner ends attached to the winding-shaft.

As a means winding-shaft.

As a preferred arrangement the rear axle :is at a point midway of its ends pivotally connected with the body-frame, and as a means for thus connecting it with the body-frame I provide a collar 6, which is fixed upon the axle and provided with pivots or journals 7 and 8, having their bearings respectively in a bent bar 9 and a straight bar 10. This construction of pivot is included in thesubject- :matter of my pending application, Serial No. 363,273,filedAugust28,l890. Imay,however, omit pivoting the axle to the'body-frame and providethe axle with shoulders or abutments 11, arranged to bear against curved guides 12,

the long rear axle can be which are-fixed upon the body frame and formed with their curved portions in the are of a circle having for its center a point midway of the ends of the axle, which devices are more particularly described in-my pending application, Serial No. 369,464, filed October 27, 1890. There I thus provide the curved guides 12,1 find it convenient to form the same by curving one or both of'the outer longitudinal edges of the guide-bearings F.

By operating the hand-wheel the rear axle can be adjusted so as to set it oblique to the length of the body-frame. When the axle is thus set oblique to the body-frame, the rear wheels will run to one side and the body-frame will swing upon the front axle until it is in such position oblique to the line of progression as shall restore parallelism between the two axles. In this way either rear wheel of brought into alignment with one of the front wheels,orthe:rear wheels can be made to travel in other selected lines.

The adjustment of the body-frameserves to change the bodily positionof the scraperblade, which can also be adjusted diagonally with reference to the position of the bodyframe, the rear wheels,

and the work to be performed. The rear wheels can'also be made to travel in selected lines with particular reference to the diagonal adjustment of the scraper-blade and also with reference to the side draft, it being observed'that when the body-frame is oblique to the line of progression theside draft willbe resisted by the disposition on the part of the rear wheels to run straight ahead.

What I claimas my 1. The combination, inbefore set forthfin a machine for making and repairing roads, of a body-frame pivotally supported upon the front axle, a diagonally-adj ustable scraper-blade carried below invention isthe body-frame andarranged to extend across the space between the front and rear wheels,

a horizontally-swinging rear axle adjustable in said movement independently of the body- 1 frame, and toggles arranged to connect the for locking the winding-shaft; I provide it with a notched wheel '5 .and arrange upon the rear platform a foot-latch M, which can engage the notched wheel on the end portions of the rearaxle with the bodyframe, so that by adjusting the toggles one end of the rear axle can be swung forward, while its opposite end can be swung rearward, for the purpose described.

2. The combination, substantiallyas hereinbefore set forth, in a machine for making and repairingroads, ally supported upon theilfront -a.\'le,.a diagonally-adjustable scraper-blade carried below th'body-frame and arranged toe-xtend across the space between the front and rear wheels, a horizontally-swinging rear axle adjustable in said movement independently of the-bodyframe, and a couple of connected and simultaneously-operating toggles connecting the end portions of the rear axle withthe bodyframe, for the purpose described.

3. The combination, substantially as heresubstantially as here-- of a body-framepivotinbefore set forth, in a machine for making and repairing roads, of a body-frame pivotally nally-adjustable scraper-blade carried below the body-frame and arranged to extend across the space between the front and rear wheels, a horizontally-swinging rear axle adjustable in said movement independently of the bodyframe, a couple of connected simultaneouslyoperating toggles connecting the end portions of the rear axle with the body-frame, and means suitable for operating the toggles, for the purpose described.

A. The combination, substantially as hereinbefore set forth, in a machine for making and repairing roads, of a body-frame pivotally supported uponthe front axle,a diagosupported upon the front axle, a diagonally-adj ust-able scraper-blade carried. below the body-frame and arranged to extend across the space between the front and rear wheels, at horizontally-swinging rear axle adjustable in said m ovementindependently of the bodyframe, a pair of connected and simultaneously-operating toggles connecting the end portions of the rear axle with the bod -frame, a hand-wheel shaft supported upon the bodyframe, and a chain or like connection operated from said hand-Wheel shaft and forming a connection between the same and the toggles.

MORTON G. BUNNELL. Vitnesses: i

H. G. KENNEDY, CHAS. G. PAGE. 

